I live downtown (a stone’s throw from the monument), and most people seem to follow the rules. But not everyone does. Pretty easy to break them down into groups.
- Big, usually black, SUVs and trucks
- Vehicles with “thin blue line” stickers / police-supporting license plates / etc
- Out of state license plates
I think all but the out-of-town folks (who aren’t used to it and don’t notice the signs due to being overwhelmed with city driving and traffic) just go ahead and do whatever they want because of a “you can’t tell me what to do” attitude. Indy cops certainly don’t enforce the signs.
The Indiana state legislature loves to dictate how Indianapolis governs itself. Refusing to comply with the signs is sort of a political statement to some, the equivalent of giving the finger to data-driven, progressive policy.